Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups
Option: 1 The gene (I) has three alleles.
Option: 2 A person will have only two of the three alleles.
Option: 3 When IA and IB are present together, they express same type of sugar.
Option: 4 Allele "i" does not produce any sugar.
When IAand IB are present together, they both express a different types of sugars.